Lock & Key || Ukai Keishin x Reader

{Ukai Keishin x Reader}
She was the one who stole his heart. She was his best friend and his first love, so of course he wondered what it'd be like to marry her in those high school fantasies.
He thought those feelings went away after graduating and losing contact, but as she stands in front of him still as beautiful as ever, he realizes that they never left him.

I HAVE BEEN SEARCHING FOR SOOOO LONG FOR A BOOK WITH UKAI AS THE PAIRING
YOU HAVE NO IDEA HOW MANY SLEEPLESS NIGHTS I HAVE SPENT SEARCHING WATTPAD STRINGS AND I HAVE FINALLY FOUND ONE
THANK YOU SO MUCH!